. >> reporter: often inspired by the sandy hook school shooting donors are giving to a gun buy back fund. $40,000 in public donations. enabling marin to buy guns, no names, no questions asked. >> thank you for getting those guns out of your house. god bless you. >> if they want to turn in three gun, they'll get paid on the spot. >> reporter: each gun is worth $100, $200 if it's a semi automatic. >> this is what you can do for mankind. >> reporter: we found marin residents enthusiastic and optimistic. >> i'm not naive enough to think that i'm going to get every young gangster to come in and turn in their gun. >> reporter: but what they want is to get the unforgotten guns that might become a danger. >> and because gun violence travels, residents of san francisco, sonoma and contra costa can come to marin. they will be getting vouchers, marin residents have priority. we're live in san rafael, deborah villalon. >>> and lawmakers are going after ammunition not the weapons. >> it takes bullets to put in the gun. when bullets are more available than sudafed, we have a problem. >> reporter: the